Hopping transport in SrTiO3 / Nd1−xTiO3 / SrTiO3 heterostructures

Switchable induced polarization in LaAlO3/SrTiO3 heterostructures.

Demonstration of a tunable conductivity of the LaAlO(3)/SrTiO(3) interfaces drew significant attention to the development of oxide electronic structures where electronic confinement can be reduced to the nanometer range. While the mechanisms for the conductivity modulation are quite different and include metal-insulator phase transition and surface charge writing, generally it is implied that t...

Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures.

Possible ferromagnetism induced in otherwise nonmagnetic materials has been motivating intense research in complex oxide heterostructures. Here we show that a confined magnetism is realized at the interface between SrTiO3 and two insulating polar oxides, BiMnO3 and LaAlO3. By using polarization dependent x-ray absorption spectroscopy, we find that in both cases the magnetism can be stabilized b...

Lattice relaxation in oxide heterostructures: LaTiO3/SrTiO3 superlattices.

Local density approximation + Hubbard U and many-body effective Hamiltonian calculations are used to determine the effects of lattice relaxation in LaTiO3/SrTiO3 superlattices. Large ferroelectric-like distortions of the TiO6 octahedra are found, which substantially affect the Ti d-electron density, bringing the calculated results into good agreement with experimental data. The relaxations also...

Stoichiometry-driven metal-to-insulator transition in NdTiO3/SrTiO3 heterostructures

Voltage-controlled ferromagnetism and magnetoresistance in LaCoO3/SrTiO3 heterostructures